Beam shaping using genetically optimized two-dimensional photonic crystals
Optics
2013-02-27 v3
Abstract
We propose the use of two-dimensional photonic crystals with engineered defects for the generation of an arbitrary-profile beam from a focused input beam. The cylindrical harmonics expansion of complex-source beams is derived and used to compute the scattered wavefunction of a 2D photonic crystal via the multiple scattering method. The beam shaping problem is then solved using a genetic algorithm. We illustrate our procedure by generating different orders of Hermite-Gauss profiles, while maintaining reasonable losses and tolerance to variations in the input beam and the slab refractive index.
Cite
@article{arxiv.1204.5380,
title = {Beam shaping using genetically optimized two-dimensional photonic crystals},
author = {Denis Gagnon and Joey Dumont and Louis J. Dubé},
journal= {arXiv preprint arXiv:1204.5380},
year = {2013}
}